INA293B1IDBVR

Overview

The INA293B1IDBVR is a unidirectional current sense amplifier from Texas Instruments, housed in a 5-pin SOT-23 package. It operates with a common-mode voltage range of -4 V to 110 V and supports supply voltages between 2.7 V and 20 V. The device features a fixed gain of 20 V/V, a bandwidth of 1.3 MHz, and a maximum input offset voltage of 80 µV. It provides a common-mode rejection ratio of 140 dB and draws 1.5 mA of quiescent current, functioning within an industrial temperature range of -40°C to +125°C.

Feature Summary

• Supports high common-mode voltages up to 110 V for flexible system integration
• Delivers ultra-precise measurement capabilities with low offset voltage characteristics
• Provides high bandwidth performance suitable for dynamic load monitoring applications

Applications

• Industrial motor control systems requiring precise current feedback
• Power supply output current monitoring in server infrastructure
• Battery management systems in portable electronic devices

Procurement Notes

Verify the specific suffix IDBVR corresponds to the tape-and-reel packaging format required for automated assembly processes. Confirm that the B1 variant matches the design requirement for a 20 V/V gain setting. Ensure compatibility with the target operating temperature range and validate pinout alignment against the schematic before finalizing procurement orders.

Selection Notes

Select this component when a fixed 20 V/V gain is necessary for signal conditioning in high-side current sensing topologies. The wide common-mode voltage range allows placement near high-voltage rails without external level shifting. Consider the 1.3 MHz bandwidth for applications requiring fast transient response and noise immunity in electrically noisy environments.

Part Context

This device belongs to the INA293 family of high-voltage current sense amplifiers designed for precision monitoring. The series offers various gain options and packaging configurations to suit different board space constraints. It serves as a critical interface between power stages and microcontrollers for protection and regulation functions.

Replacement Considerations

INA293A1IDBVR: Offers similar specifications with potentially tighter offset voltage tolerances.

FAQ

What is the fixed voltage gain of the INA293B1IDBVR?

The INA293B1IDBVR has a fixed internal gain of 20 V/V.

Does the INA293B1IDBVR support bidirectional current sensing?

No, the INA293B1IDBVR is designed for unidirectional current sensing only.